Congenital nystagmus is an abnormal repetitive oscillation of eye movements which typically onset at 2 to 3 months of age. The amplitude and frequency of the nystagmus can vary from moment to moment and often increased by active fixation, attention or anxiety. Amplitude may be minimized by convergence and purposeful lid closure.
The neuropathology and treatment of congenital nystagmus are variable, but neuro-optometric rehabilitation should be considered as a treatment option for congenital nystagmus.
We recently presented a case study at the Neuro Optometric Rehabilitative Association annual meeting that was held in San Diego that outlines the successful use of Visagraph IITM in the Vision Therapy treatment of a patient with congenital nystagmus by providing biofeedback to decrease the amplitude of the nystagmus.
The exam findings include horizontal jerk nystagmus, reduced visual acuity, myopia, moderate astigmatism, intermittent exotropia, binocular dysfunction, oculomotor dysfunction, reduced visual motor integration, and retention of primitive reflexes.
Improvement in binocular visual acuity was observed along with a reduction in the amplitude and the frequency of the nystagmus.
Keywords: Nystagmus treatment, vision therapy, eye movements
by Jessica Fang, O.D.
Office of Derek Tong, O.D.
Center for Vision Development Optometry